CN209244689U - Fuel gas injection valve with automatic safety device - Google Patents
Fuel gas injection valve with automatic safety device Download PDFInfo
- Publication number
- CN209244689U CN209244689U CN201821711431.9U CN201821711431U CN209244689U CN 209244689 U CN209244689 U CN 209244689U CN 201821711431 U CN201821711431 U CN 201821711431U CN 209244689 U CN209244689 U CN 209244689U
- Authority
- CN
- China
- Prior art keywords
- valve
- gas injection
- fuel gas
- needle
- mandril
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn - After Issue
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Classifications
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/30—Use of alternative fuels, e.g. biofuels
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- Fuel-Injection Apparatus (AREA)
Abstract
Technical solutions of the utility model disclose the fuel gas injection valve with automatic safety device, including valve casing, the mandril being fixed in the valve casing, the needle-valve connecting with the mandril, the protection bushing for being sheathed on the mandril and the needle-valve being strutted the spring being fixed in the valve casing by elastic force simultaneously between the mandril and the needle-valve, is sheathed on the needle-valve and can move back and forth；Wherein, driving oil-in is offered on the side wall of the valve casing, solenoid valve is installed outside the driving oil-in, and the solenoid valve passes through piping connection to external high pressure oil sources.The fuel gas injection valve of the utility model; by using the mode of the installation protection bushing between needle-valve and valve casing; the control for realizing fuel gas injection amount avoids excess combustion gas when due to complete machine control system, fuel gas injection valve or spring failure and sprays into safety problem caused by cylinder.
Description
Technical field
The utility model relates to fuel gas injection hydraulic cylinder technical field, more particularly, to a kind of with automatic safety device
Fuel gas injection valve.
Background technique
With the sustainable development of global economy, people are still being constantly increasing energy demand, and at present in world wide
Oil shortage and global problem of environmental pollution become increasingly conspicuous so that various countries one after another by sight turn to using gas as fuel
Gas machine and double fuel machine.And fuel gas injection valve is just unquestionable with executive component as directly controlling of spraying of gaseous fuel
The part one of most crucial as gas machine and double fuel machine.Widely used fuel gas injection valve only has single currently on the market
Ejection function, another other component of installing play certain safeguard protection, it may be assumed that window valve and double electricity are equipped with before fuel gas injection valve
Magnet valve, before gas injection, solenoid valve is in closed state before solenoid valve and fuel gas injection valve before window valve, window valve, works as combustion
Gas jet valve opens front window valve and needs to open, and solenoid valve powers on before control unit sends instruction control window valve, high pressure servo
Oil enters window valve all the way, and driving window valve is opened, combustion gas to be sprayed, the high pressure that enters fuel gas injection valve air inlet etc. in window valve
Servo oil another way enters solenoid valve before fuel gas injection valve, to be driven at oil inlet etc.；When fuel gas injection valve needs to open,
Solenoid valve powers on before control unit sends instruction control fuel gas injection valve, waits before staying in fuel gas injection valve at solenoid valve oil inlet
High pressure servo oil enters fuel gas injection valve, and driving valve inner needle valve overcomes the spring resistance of fuel gas injection valve to move upwards, gas injection
It penetrates valve and opens simultaneously jet；When fuel gas injection valve needs to close, control unit sends solenoid valve before instruction control fuel gas injection valve
Power-off, the cutting of high pressure servo oil, needle-valve moves downward until taking a seat under spring force and needle-valve gravity, and fuel gas injection valve closes
It closes；After fuel gas injection valve is closed, according to setting time, window valve is closed, and control unit sends electromagnetism before instruction control window valve
Valve power-off, the cutting of high pressure servo oil, window valve is closed under spring force, the fuel gas path cutting of fuel gas injection valve.Due to
The accidental situation of control system, window valve, solenoid valve and each section part, when lacking combustion gas excessive protective device automatically on
The system of stating will lead to excessive combustion gas and spray into cylinder and cause the safety problems such as detonation.
Utility model content
The purpose of this utility model is to provide a kind of more simple and safety fuel gas injection valves, are realizing fuel gas injection
While control, the safety such as excess combustion gas is avoided when control system, solenoid valve or spring failure to spray into cylinder and causes detonation from asking
Topic.
In order to solve the above technical problems, technical solutions of the utility model provide a kind of combustion gas with automatic safety device
Injection valve, wherein including valve casing, the mandril being fixed in the valve casing, the needle-valve connecting with the mandril, be sheathed on the top
On bar and the needle-valve is strutted by elastic force simultaneously between the mandril and the needle-valve and is fixed in the valve casing
Spring, the protection bushing that is sheathed on the needle-valve and can move back and forth；Wherein, driving oil is offered on the side wall of the valve casing
Entrance, solenoid valve is installed outside the driving oil-in, and the solenoid valve passes through piping connection to external high pressure oil sources.
Optionally, the spring, the needle-valve, the protection bushing are mounted in the valve casing.
Optionally, between the needle-valve, the protection bushing and the valve casing formed driving oil pocket, the driving oil pocket and
Driving oil-in connection.
Optionally, fuel gas injection chamber, the gas injection are also formed between the needle-valve, the protection bushing and the valve casing
The position for penetrating chamber is opposite with the driving oil pocket.
Optionally, the valve casing offers gas inlet hole, institute with penetrating through at the sidewall locations of the protection bushing
Gas inlet hole and the fuel gas injection chamber connection are stated, the gas inlet hole is connected to outer combustion gas source.
Optionally, the needle-valve gap and is formed relative to having between the one end and the valve casing connecting with the mandril
Fuel gas injection road, the valve casing relative to the one end being connect with the mandril head opening and form gas injection loophole, it is described
Gas inlet hole, the fuel gas injection chamber, the fuel gas injection road, the gas injection loophole successively connection.
Optionally, elastic force and the valve casing that the needle-valve passes through the spring relative to the one end connecting with the mandril
Between contact or separation, the fuel gas injection road be in normally off.
Optionally, be formed with the step for installing the needle-valve in the valve casing, the needle-valve telescopically with it is described
When mandril installation, the needle-valve and the mandril are in close contact, gap is formed between the needle-valve and the step.
Optionally, what is also extended through on the side wall of the valve casing offers oil return opening, and the oil return opening is close to the spring；Institute
It states in mandril, the needle-valve and the protection bushing and is provided with the sealing oil duct penetrated through each other, the sealing oil duct in the mandril
Oil sources is sealed by piping connection to outside.
In order to solve the above technical problems, technical solutions of the utility model also provide a kind of combustion with automatic safety device
The working method of gas jet valve, wherein the working method is as follows:
Combustion gas enters the fuel gas injection chamber by the gas inlet hole, simultaneously；
The solenoid valve starting, high pressure oil is entered in driving oil pocket by the driving oil-in, and drives the needle
Valve separates with the valve casing and exposes the fuel gas injection road, and the intracavitary quantitative combustion gas of the fuel gas injection passes through the combustion gas
Injection road leads to the gas injection loophole and sprays outward；
The protection bushing is since the pressure of high pressure oil is mobile towards the fuel gas injection road, until the protection bushing will
The fuel gas injection road sealing, combustion gas stop injection outward.
The beneficial effect of technical solutions of the utility model is:
The fuel gas injection valve of the utility model, it is real by using the mode of the installation protection bushing between needle-valve and valve casing
The control for having showed fuel gas injection amount avoids excess gas injection when due to complete machine control system, fuel gas injection valve or spring failure
Safety problem caused by entering in cylinder.Combustion can be effectively suppressed while playing the role of safeguard protection by protection bushing simultaneously
Pressure oscillation in gas jet process.The utility model by fuel gas injection with security service set together with, significantly
Reduce the design difficulty of gas injection system and engine control system.The fuel gas injection valve of the utility model is processed and assembly is difficult
Spend it is low, can effectively save gas injection system processing and manufacturing cost.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of fuel gas injection valve working condition one in the utility model embodiment；
Fig. 2 is the structural schematic diagram of fuel gas injection valve working condition two in the utility model embodiment；
Fig. 3 is the structural schematic diagram of fuel gas injection valve working condition three in the utility model embodiment.
Specific embodiment:
The utility model is described in further detail in the following with reference to the drawings and specific embodiments, but not as the utility model
It limits.
In the present invention unless specifically defined or limited otherwise, term " installation ", " connected ", " connection ", " Gu
It is fixed " etc. terms shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or be integrally connected；It can
To be mechanical connection, it is also possible to be electrically connected；It can be directly connected, can also can be indirectly connected through an intermediary
Connection inside two elements.For the ordinary skill in the art, above-mentioned term can be understood as the case may be
Concrete meaning in the present invention.
In the present invention unless specifically defined or limited otherwise, fisrt feature the "upper" of second feature or it
"lower" may include that the first and second features directly contact, and also may include that the first and second features are not direct contacts but lead to
Cross the other characterisation contact between them.Moreover, fisrt feature includes above the second feature " above ", " above " and " above "
One feature is right above second feature and oblique upper, or is merely representative of first feature horizontal height higher than second feature.First is special
Sign includes fisrt feature right above second feature and oblique upper under the second feature " below ", " below " and " below ", or only
Indicate that first feature horizontal height is less than second feature.
It is shown in Figure 1, show a kind of fuel gas injection valve with automatic safety device of embodiment, wherein packet
Valve casing 6 is included, the mandril being fixed in valve casing 61, the needle-valve 4 being connect with mandril 1, is sheathed on mandril 1 and is located at mandril 1 and needle
Needle-valve 4 is strutted to the spring 2 being fixed in valve casing 6, is sheathed on needle-valve 4 and can move back and forth by elastic force simultaneously between valve 4
Protection bushing 5；Wherein, driving oil-in 15 is offered on the side wall of valve casing 6, and solenoid valve 3, electricity are installed outside driving oil-in 15
For magnet valve 3 by piping connection to external high pressure oil sources, solenoid valve 3 is two position two-way valve or two position three-way valve.
In the present embodiment, spring 2, needle-valve 4, protection bushing 5 are mounted in valve casing 6.
In the present embodiment, driving oil pocket 8, driving oil pocket 8 and driving oil are formed between needle-valve 4, protection bushing 5 and valve casing 6
15 connection of entrance also forms fuel gas injection chamber 9, the position of fuel gas injection chamber 9 and drive between needle-valve 4, protection bushing 5 and valve casing 6
Dynamic oil pocket 8 is opposite.
In the present embodiment, valve casing 6 offers gas inlet hole 11 with penetrating through at the sidewall locations of protection bushing 5, fires
Gas air inlet 11 and 9 connection of fuel gas injection chamber, gas inlet hole 11 is connected to outer combustion gas source.
In the present embodiment, needle-valve 4 gap and forms combustion gas relative to having between the one end and valve casing 6 connecting with mandril 1
Spray road 14, valve casing 6 relative to the one end being connect with mandril 1 head opening and form gas injection loophole 10, gas inlet hole
11, fuel gas injection chamber 9, fuel gas injection road 14, gas injection loophole 10 successively connection.
In the present embodiment, contacted between the elastic force and valve casing 6 that needle-valve 4 passes through spring 2 relative to the one end connected with mandril 1
Or separation, fuel gas injection road 14 are in normally off.
In the present embodiment, the step 16 for installing needle-valve 4 is formed in valve casing 6, needle-valve 4 is telescopically pacified with mandril 1
When dress, needle-valve 4 and mandril 1 are in close contact, gap 7 is formed between needle-valve 4 and step 16.
In the present embodiment, what is also extended through on the side wall of valve casing 6 offers oil return opening 13, and oil return opening 13 is close to spring 2；Mandril
1, it is provided with the sealing oil duct 12 penetrated through each other in needle-valve 4 and protection bushing 5, the sealing oil duct 12 in mandril 1 is connected by pipeline
It is connected to external sealing oil sources.
By the following characteristic and function for illustrating further insight the utility model, the present embodiment has automatic protection
The working method of the fuel gas injection valve of device is as follows:
When fuel gas injection valve is in non-ejection section, as shown in Figure 1, solenoid valve 3 powers off, by needle-valve 4, protection bushing 5
The hydraulic fluid chamber and oil return circuit connection formed with valve casing 6, cavity pressure is zero (or very low), active force of the needle-valve 4 in spring 2
Under remain off (i.e. needle-valve 4 and step 16 be in close contact state), protection bushing 5 is located under the action of gaseous-pressure
The top (i.e. the state of protection bushing 5 and the close contact of needle-valve 4) of gas chamber, higher than the high pressure of gaseous-pressure 20bar or so
The gap location that hydraulic oil is transmitted to needle-valve 4 and protection bushing 5 by sealing oil duct 12 through mandril 1, plays the work of sealing combustion gas
With.
When fuel gas injection valve is in injection section, as shown in Figure 2: solenoid valve 3 is powered, and high pressure liquid pressure oil enters from driving oil
Mouthfuls 15 are passed through in the driving oil pocket 8 being made of needle-valve 4, protection bushing 5 and valve casing 6, and needle-valve 4 is under the action of high drive oil gram
It takes the active force of spring 2 and high pressure sealing oil and opens (i.e. needle-valve 4 is contacted with mandril 1)；Meanwhile after needle-valve 4 is opened, protection lining
Set 5 moves downward under the action of oily with high drive all the way, and protection bushing 5 is run gas quantity corresponding to stroke (i.e.
High pressure liquid pressure oil in fuel gas injection chamber 9) it is sprayed into cylinder outward by fuel gas injection road 14, gas injection loophole 10, complete one
The fuel gas injection of a circulation.Simultaneously as the sealing oil duct 12 on original protection bushing 5 is cut after protection bushing 5 is run down
It is disconnected, protect the combustion gas between bushing 5 and valve casing 6 that can be sealed by high drive oil.
When the fuel gas injection amount of fuel gas injection valve reaches the upper limit, as shown in figure 3, in the protection operation to valve casing 6 of bushing 5
Bottom of chamber portion mechanical position limitation, gas inlet hole 11 and fuel gas injection chamber 9 are cut off, and fuel gas injection stops, and realize safeguard protection effect.
In conclusion the fuel gas injection valve of the utility model, by using the installation protection bushing between needle-valve and valve casing
Mode, realize the control of fuel gas injection amount, avoid mistake when due to complete machine control system, fuel gas injection valve or spring failure
Safety problem caused by measuring in combustion gas penetrating cylinder.
It can be effectively suppressed in fuel gas injection process while playing the role of safeguard protection by protection bushing simultaneously
Pressure oscillation.The utility model by fuel gas injection with security service set together with, considerably reduce fuel gas injection system
The design difficulty of system and engine control system.
The above is only the utility model preferred embodiments, are not intended to limit the embodiments of the present invention and protection
Range should can appreciate that all with the utility model specification and diagramatic content institute to those skilled in the art
The equivalent replacement made and obviously change obtained scheme, the protection scope of the utility model should all be included in
It is interior.
Claims (9)
1. a kind of fuel gas injection valve with automatic safety device, which is characterized in that including valve casing, be fixed in the valve casing
Mandril, the needle-valve connecting with the mandril are sheathed on the mandril and lead to simultaneously between the mandril and the needle-valve
Cross the protection that the needle-valve is strutted the spring being fixed in the valve casing, is sheathed on the needle-valve and can move back and forth by elastic force
Bushing；Wherein, driving oil-in is offered on the side wall of the valve casing, and solenoid valve, the electricity are installed outside the driving oil-in
Magnet valve passes through piping connection to external high pressure oil sources.
2. the fuel gas injection valve according to claim 1 with automatic safety device, which is characterized in that the spring, institute
State needle-valve, the protection bushing is mounted in the valve casing.
3. the fuel gas injection valve according to claim 1 with automatic safety device, which is characterized in that the needle-valve, institute
It states and forms driving oil pocket, the driving oil pocket and driving oil-in connection between protection bushing and the valve casing.
4. the fuel gas injection valve according to claim 3 with automatic safety device, which is characterized in that the needle-valve, institute
It states and also forms fuel gas injection chamber, the position of the fuel gas injection chamber and the driving oil pocket phase between protection bushing and the valve casing
It is right.
5. the fuel gas injection valve according to claim 4 with automatic safety device, which is characterized in that the valve casing is close
Gas inlet hole, the gas inlet hole and the fuel gas injection chamber are offered with penetrating through at the sidewall locations of the protection bushing
Connection, the gas inlet hole are connected to outer combustion gas source.
6. the fuel gas injection valve according to claim 5 with automatic safety device, which is characterized in that the needle-valve is opposite
There is gap between the one end and the valve casing connecting with the mandril and form fuel gas injection road, the valve casing relative to
The head opening of one end of the mandril connection simultaneously forms gas injection loophole, the gas inlet hole, the fuel gas injection chamber, institute
State fuel gas injection road, the gas injection loophole successively connection.
7. the fuel gas injection valve according to claim 6 with automatic safety device, which is characterized in that the needle-valve is opposite
It contacts or separates between the elastic force and the valve casing that the one end connected with the mandril passes through the spring, the fuel gas injection
Road is in normally off.
8. the fuel gas injection valve according to claim 1 with automatic safety device, which is characterized in that shape in the valve casing
At the step having for installing the needle-valve, the needle-valve is telescopically installed with the mandril, the needle-valve and the mandril
When close contact, gap is formed between the needle-valve and the step.
9. the fuel gas injection valve according to claim 1 with automatic safety device, which is characterized in that the side of the valve casing
What is also extended through on wall offers oil return opening, and the oil return opening is close to the spring；The mandril, the needle-valve and the protection serve as a contrast
The sealing oil duct penetrated through each other is provided in set, the sealing oil duct in the mandril seals oil sources by piping connection to outside.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821711431.9U CN209244689U (en) | 2018-10-22 | 2018-10-22 | Fuel gas injection valve with automatic safety device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821711431.9U CN209244689U (en) | 2018-10-22 | 2018-10-22 | Fuel gas injection valve with automatic safety device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209244689U true CN209244689U (en) | 2019-08-13 |
Family
ID=67525574
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821711431.9U Withdrawn - After Issue CN209244689U (en) | 2018-10-22 | 2018-10-22 | Fuel gas injection valve with automatic safety device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209244689U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109555620A (en) * | 2018-10-22 | 2019-04-02 | 中船动力研究院有限公司 | Fuel gas injection valve and its working method with automatic safety device |
-
2018
- 2018-10-22 CN CN201821711431.9U patent/CN209244689U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109555620A (en) * | 2018-10-22 | 2019-04-02 | 中船动力研究院有限公司 | Fuel gas injection valve and its working method with automatic safety device |
| CN109555620B (en) * | 2018-10-22 | 2023-09-22 | 中船动力研究院有限公司 | Gas injection valve with automatic protection device and working method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20190813 Effective date of abandoning: 20230922 |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20190813 Effective date of abandoning: 20230922 |
|
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |